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Motorola 68881 information


Motorola 68881 FPU

The Motorola 68881 and Motorola 68882 are floating-point units (FPUs) used in some computer systems in conjunction with Motorola's 32-bit 68020 or 68030 microprocessors. These coprocessors are external chips, designed before floating point math became standard on CPUs. The Motorola 68881 was introduced in 1984.[1] The 68882 is a higher performance version produced later.

  1. ^ Sterling, Thomas; Anderson, Matthew; Brodowicz, Maciej (2017). High Performance Computing: Modern Systems and Practices. Morgan Kaufmann. p. 459. ISBN 978-0-12-420158-3.

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Motorola 68881

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The Motorola 68881 and Motorola 68882 are floating-point units (FPUs) used in some computer systems in conjunction with Motorola's 32-bit 68020 or 68030...

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Motorola 68040

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supported by both the 68881 and 68882 and were used by the popular fractal generating software of the time and little else. The Motorola floating point support...

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Coprocessor

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treated as peripheral devices, while others such as the Intel 8087, Motorola 68881 and National 32081 were more closely integrated with the CPU. Another...

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Motorola 68020

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complete systems ready to use the 020 and the new floating point unit, the Motorola 68881. Systems were in the market only five or six months after the 020 had...

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Motorola 68030

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The Motorola 68030 ("sixty-eight-oh-thirty") is a 32-bit microprocessor in the Motorola 68000 family. It was released in 1987. The 68030 was the successor...

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Motorola 68000 series

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and 32-bit interfaces) Motorola 68000 Motorola 68EC000 Motorola 68SEC000 Motorola 68HC000 Motorola 68008 Motorola 68010 Motorola 68012 Generation two (internally...

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Motorola 68000

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The Motorola 68000 (sometimes shortened to Motorola 68k or m68k and usually pronounced "sixty-eight-thousand") is a 16/32-bit complex instruction set...

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X68000

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Sharp CZ-6BP2: Motorola 68881 @ 16 MHz Sharp CZ-5MP1: Motorola 68882 @ 25 MHz Xellent30: Motorola 68882 @ 33 MHz Tsukumo TS-6BE6DE: Motorola MC68882, with...

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Motorola 68010

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The Motorola MC68010 and Motorola MC68012 are 16/32-bit microprocessors from Motorola, released in 1982 as successors to the Motorola 68000. The 68010...

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Freescale 683XX

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The Freescale 683xx (formerly Motorola 683xx) is a family of compatible microcontrollers by Freescale that use a Motorola 68000-based CPU core. The family...

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Motorola 68HC12

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68HC12 (also abbreviated as 6812 or HC12) is a microcontroller family from Motorola Semiconductor (later from Freescale then NXP). Originally introduced in...

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Motorola 6800

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hundred") is an 8-bit microprocessor designed and first manufactured by Motorola in 1974. The MC6800 microprocessor was part of the M6800 Microcomputer...

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Freescale DragonBall

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Motorola/Freescale Semiconductor's DragonBall, or MC68328, is a microcontroller design based on the famous 68000 core, but implemented as an all-in-one...

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IEEE 754

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without any mandatory relation between emin and emax. For example, the Motorola 68881 80-bit format, where emin = − emax, was a conforming extended format...

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Motorola 6809

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The Motorola 6809 ("sixty-eight-oh-nine") is an 8-bit microprocessor with some 16-bit features. It was designed by Motorola's Terry Ritter and Joel Boney...

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Atari Falcon

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Processor: Motorola 68030 at 16 MHz with MMU and 256 byte instruction and data caches FPU: optional Motorola 68881 or 68882, PLCC socket DSP: Motorola 56001...

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Motorola 68HC11

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microcontroller family introduced by Motorola Semiconductor in 1984 (later from Freescale then NXP). It descended from the Motorola 6800 microprocessor by way of...

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Motorola 6800 family

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(latter dubbed the Motorola 6800 family, M6800 family, or 68xx) was a series of 8-bit microprocessors and microcontrollers from Motorola that began with...

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IBM RT PC

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or external 4 MB ECC memory cards, and featured a built-in 20 MHz Motorola 68881 floating-point processor. The Advanced Processor Card could be accompanied...

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PowerPC

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(RISC) instruction set architecture (ISA) created by the 1991 Apple–IBM–Motorola alliance, known as AIM. PowerPC, as an evolving instruction set, has been...

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CORDIC

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80287, 80387 up to the 80486 coprocessor series as well as in the Motorola 68881 and 68882 for some kinds of floating-point instructions, mainly as a...

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Motorola 68060

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The Motorola 68060 ("sixty-eight-oh-sixty") is a 32-bit microprocessor from Motorola released in April 1994. It is the successor to the Motorola 68040...

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Motorola Single Board Computers

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Motorola Single Board Computers is Motorola's production line of computer boards for embedded systems. There are three different lines : mvme68k, mvmeppc...

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Macintosh II

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The Macintosh II is built around the Motorola 68020 processor operating at 16 MHz, teamed with a Motorola 68881 floating-point unit. The machine shipped...

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Extended precision

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and the exponent fields), but without correct rounding. The x87 and Motorola 68881 80-bit formats meet the requirements of the IEEE 754-1985 double extended...

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General Computer Corporation

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the "HyperDrive 2000", a 20MB internal hard disk that also included a Motorola 68881 floating-point unit, but the speed advantage of the HyperDrive had been...

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Amiga 2000

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for the A2000. The A2620 included a Motorola 68881 FPU and Motorola 68851 MMU, whereas the A2630 included a Motorola 68882 FPU (and MMU built into the 68030)...

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Motorola 88110

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The MC88110 was a microprocessor developed by Motorola that implemented the 88000 instruction set architecture (ISA). The MC88110 was a second-generation...

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